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Finding the Fourth Proportional to 66,532.50, 91,814.94 and 36,724.50

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Solution

The fourth proportional to 66,532.50, 91,814.94 and 36,724.50 is: 50,679.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,532.50 : 91,814.94 = 36,724.50 : x
  2. Step 2: Convert to fraction form
    66,532.50/91,814.94 = 36,724.50/x
  3. Step 3: Cross multiply
    66,532.50x = 91,814.94 × 36,724.50
  4. Step 4: Simplify right side
    66,532.50x = 3,371,857,764.03
  5. Step 5: Solve for x
    x = 3,371,857,764.03/66,532.50
  6. Step 6: Final answer
    x = 50,679.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.